Means for packing cylinder liners



May 31, 1932. A. BUCHI MEANS FOR PACKING CYLINDER LINERS Filed Sept. 24. 1930 2 Sheets-Sheet l \H V\\ fl/ $064122 fiud 3 May 31, 1932. A. BUCHI MEANS FOR PACKING CYLINDER LINERS Filed Sept. 24, 1930 2 Sheets-Sheet Patented May 31, 1932 UNITED STA ES ALFRED BUCHI, or WINTERTHUR, swrrznnnann;aassrenon'ro swrss noooiiorrvn AND MACHINE worms, or wrnrnnrnua, SWITZERLAND, A conrona'rron or SWITZERLAND MEANS FOR PACKING CYLINDER LINERS Application filed September 24, 1930, Serial No.

liner, of which joints the inner one is rigid and closes the combustion chamber, whilst the outer is yielding or resilient and closes the cooling chamber or water jacket, an annular space which is formed between the two joints being always open to the atmosphere for the purpose of completely relieving it of all fluid.

According to a feature of the invention, the side of the cooling chamber remote from the combustion chamber may likewise be closed by yielding or resilient packing.

One embodiment of the invention and a modification thereof are diagrammatically illustrated by way of example in the accompressure and emptying it ofcooling panying drawings, wherein Figure 1 is a central vertical longitudinal section through a cylinder liner packed according to the invention, and

Figure 2 a detail view thereof on a larger scale;

Figures 3 and 4 are like views, respectively, showing a modified arrangement.-

In the drawings, 1 denotes the liner of a cylinder 3 of an internal combustion engine to be packed, 2 designates the piston, and 4 the cylinder head whereof the inner part closes the liner at one end, valves 5 and 6 being provided in the head 4.

According to the invention, an inner packing member 7 and an outer packing member 8 are arranged at the abutting faces between the head 4 and the liner 1. The inner pack-' ing member 7 is a hard, e. g. metallic, mem- 1 ber, whilst the outer packing member is that atmospheric pressure is present in it and 484,020, and in Switzerland Septemben30, 1929.

PATENT orrlc j any gas or cooling medium that may enter 3 into it can flow away.

In the construction shown in Figures 1 and 2 such evacuation of the space, 9 occurs through a tube 10 which is screwed horizon-I. tally into position just above the lower face of the cylinder head 4 and extends freely through a stulfing box 11 inthe of the cylinder head.

Besides the two joints 7 and 8 a third j oint" outer wall 12 is arranged between the cylinderbodyB and the cylinder head 4, which packing member 12 shuts off from the. open'air the cooling medium in the j acketing spaces 17 and 18. This packing member 12 likewise prefer-1' ably yielding or elastic.

In the construction shown in Figures 3 and 4, the annular space 9 is connected to the atmosphere and drained by a downwardly directed tube 13 extending along the periphery of the liner, This tube 13 opens into a lower part 16 of thecylinder body which is connected to the atmosphere by a tube 15. In this construction also there is a thirdelastic packing member 12 between the cylinder body. .8 and its head 4, which'joint l2 prevents the 'cooling medium from leaking into the atmosphere.

1. In combination, a cylinder head, a cyl-' inder liner, two concentric joints between said cylinder head and said liner, a rigid packing provided on the inner joint, a yieldingpaoking provided on the outer joint, an

annular space between said two joints, andpacking provided on the inner j0int,;a yield- 7 ing packing provided on the outer joint, an annular space between sa1dtwo joints, a conduit from sald annular space to a space with atmospheric pressure, a cooling chamber between said liner and said cylinder jacket, and a third joint packing. v .3. In combination, a cylinder head,.a cylinder liner, two concentric joints between provided with a yielding I said cylinder head andsaid liner, a rigid packing provided on the inner joint, a yielding packing provided on the outer joint, an annular space between said two joints, and 5 a conduit connecting said annular space with a space halving substantially atmospheric pressure, said conduit extending alongside said cylinder liner. I

In testimony whereof I affix my signature.

1o VAJLFREDBUOHI. 

